Low Water Cut-Off Replacement On Weil-Mclane Boiler. But Why Two?

[@desieranks]

They always put 2 of the same safety on Comercial boilers

[@nayemhossain4283]

Code over 300000 btu requar two low water cuts of one manually push to one ,if cut off

[@Bob.W.]

I think code requires a 2nd cutoff in certain states for boilers above a certain btu rating. That's a big boiler. I had 550,000 WM EG-11 in my house. Was able to replace it with an 8 section Burnham Independence.

[@JeffsHVACAdventures]

Didn’t think about that. Good point

[@georgebrabec1749]

​@JeffsHVACAdventures Somebody might have been thinking about redundant protection. Better to have 2 than none !

[@georgebrabec1749]

Sometimes you could have 2 LECO's , one being used as the actual burner shutdown and the second one controls the make-up wster valve.

[@JeffsHVACAdventures]

Very true. These two basically shut down the same thing tho. The one I replaced cut main power to the boiler, the other cut power to the ignition control board.

[@databasespace]

maybe a odd safety feature, one for each burner but wired diffrently

[@JeffsHVACAdventures]

Could be..

[@jeffreyhalet9632]

In case someone says Double hog dare ya…
Better have 2 guard dogs 😂😂😂

[@mikewhittaker5984]

Same reason it has 2 valves pads the bill

[@zlo92x21]

The size of the boiler is why I believe

[@Irilia_neko]

Redundancy is the reason I think